CVE-2017-3133 Cross-site scripting in Fortinet FortiOS

What is CVE-2017-3133?

CVE-2017-3133 is a medium-severity cross-site scripting vulnerability in Fortinet Fortios, published on 12 Sep 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.6.0 and earlier allows attackers to execute unauthorized code or commands via the Replacement Message HTML for SSL-VPN.

Weakness: CWE-79

Which versions are affected by CVE-2017-3133?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2017-3133?

No fix has been published for CVE-2017-3133 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2017-3133 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-3133 exists.

Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mcpm-3f4m-4gc6.